header ul li:nth-child(3) {
	background-color: #0f8ece;
	border-bottom: 4px #000 solid;
}

.nav1 a:nth-of-type(1) {
	color: #3bbbf4;
}
.activity{
	width: 100%;
	background-color: #f0f0f5;
}
.activity ul{
	list-style: none;
	width: 1190px;
	display: flex;
	flex-wrap: wrap;
	margin: 0 auto;
}
.activity ul li{
	width: 275px;
	height: 370px;
	background-color: #fff;
	margin: 11px;
}
.activity ul li img{
	margin: 15px 8px 2px 15px;
}
.activity ul li h3{
	font-size: 15px;
	margin-left: 8px;
}
.activity ul li p{
	font-size: 12px;
	margin-left: 15px;
	line-height: 18px;
	color: #999;
}
.activity ul li p:nth-of-type(4){
	width: 85px;
	float: left;
}
.activity ul li p span{
	color: #ff0000;
}
.activity ul li p:nth-of-type(1){
	color: #666;
}
.activity button{
	font-size: 12px;
	margin-left: 15px;
	width: 40px;
}
.activity button:nth-of-type(1){
	margin-left: 60px;
}